Zobrazeno 1 - 10
of 76
pro vyhledávání: '"G. Fahsold"'
Autor:
Annemarie Pucci, Florian Kost, Torsten Kolb, G. Fahsold, Maria Eugenia Toimil-Molares, Frank Neubrech, Thomas W. Cornelius, Reinhard Neumann
Publikováno v:
Infrared Physics & Technology. 49:29-34
Metal nanostructures allow manipulating light on a sub-wavelength length scale. We investigated the IR-optical properties of single nanosized slits in metal thin films. These nanoslits were prepared in ultrathin Au films on various substrates by appl
Publikováno v:
physica status solidi (c). 2:3963-3967
The growth of silver on UHV cleaved MgO(001) at various temperatures is in situ studied with IR spectroscopy followed by ex situ AFM. In the whole substrate-temperature range for silver deposition used in this study (from about 70 K to 500 K) island
Publikováno v:
The Journal of Physical Chemistry B. 108:18174-18178
Metal-film surfaces show well ordered facets if grown at sufficiently high temperature and at relatively small deposition rate. Such films may grow as pyramids that become increasingly steep with more coverage. On MgO(001) at about 400 °C iron forms
Publikováno v:
The Journal of Chemical Physics. 119:4887-4890
Various experimental results on surface enhanced infrared absorption reveal asymmetric line shapes. Whereas the order of magnitude of the enhancement can be understood from electromagnetic field enhancement the unusual line shape remains without sati
Publikováno v:
Thin Solid Films. 428:107-110
Electron transport properties reflect both the size-dependent electronic structure of metal ultrathin films and their morphology. We investigate these transport properties by means of IR-transmittance spectroscopy performed during growth of iron on M
Publikováno v:
Surface Science. :388-393
We studied the infrared absorption lines for the stretching mode of CO on ultrathin Fe(1 0 0) prepared as smooth as possible on MgO(0 0 1) by various methods. For films that gave different atomic force microscopic pictures but similar LEED patterns,
Publikováno v:
Surface and Interface Analysis. 33:487-490
Metals are known to grow three-dimensionally on clean ionic crystal surfaces with low surface energies. As a consequence, the naturally grown films consist of islands and are non-conductive up to the percolation threshold, which is at 1 nm for iron f
Publikováno v:
physica status solidi (a). 188:1471-1476
Vibrational modes of adsorbates on rough metal films can show surface enhanced Raman scattering (SERS) as well as surface enhanced infrared (IR) absorption (SEIRA). Both effects are a consequence of field enhancement and of a so-called chemical effec
Publikováno v:
Applied Physics A Materials Science & Processing. 73:39-43
The high mobility of metal adsorbates on perfect oxide surfaces favours an island-growth mode, which results in a granular morphology for metallic thin films. At low temperature, a fast substrate coverage is achieved due to the reduced mobility which
Publikováno v:
Surface Science. :90-95
We have developed preparation procedures which suppress island growth of Fe on MgO(0 0 1) in ultrahigh vacuum. The resulting smooth Fe(0 0 1) films of few nanometer thickness have been exposed to CO. The infrared broadband transmission at normal inci